BUG=angle:650
TEST=no behavior change

Change-Id: Ib52f15f6471fc7897b66d11baee11216cf08158a
Reviewed-on: https://chromium-review.googlesource.com/199591Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Zhenyao Mo <zmo@chromium.org>
Tested-by: Zhenyao Mo <zmo@chromium.org>